Cost overview
An 80×100 metal building contains 8,000 square feet and can serve as a warehouse, agricultural equipment building, fleet facility, manufacturing shell or large commercial storage project. An advertised price for a building this size may describe only the structural package. A usable project budget must also address erection, transportation, unloading, large openings, site preparation, structural foundations, floor slab, engineering, permits and any selected building systems.
The baseline on this page uses a red-iron erected-shell configuration with a 20-foot eave, two large roll-up doors and one smaller service opening. The height and opening assumptions represent a large operational building, but they do not define a final design. The shell result includes red-iron kit and erection allowances plus freight and manufacturer-engineering allowances when those items have not been confirmed in writing.
At 8,000 square feet, economies of scale can reduce the structural package rate per floor square foot, but fixed and project-specific costs do not disappear. Mobilization, engineered openings, erection equipment, site logistics, permit review and foundation requirements can prevent a simple unit rate from predicting the final total. The Low, Typical and High columns therefore use internally consistent planning scenarios rather than presenting one national average as a quote.
The page also compares concrete choices without claiming to design the foundation. The floor slab supports operations while column footings or other structural elements transfer building reactions into the soil. Four-inch, six-inch reinforced and heavy-duty rows vary the planning allowance, but final thickness, reinforcement, concrete strength, joints, pits, loading docks and equipment pads require coordinated project documents.
Kit versus installed and turnkey scope
Request proposals based on the same structural loads, clear span, bay spacing, eave height, roof slope, panel specification, opening schedule and delivery location. Confirm whether the number includes stamped manufacturer drawings, anchors, freight, unloading, erection labor, equipment, temporary bracing and cleanup. The calculator can normalize broad cost categories, but it cannot make two structurally different packages comparable. Commercial requirements such as sprinklers, fire alarms, accessibility work, utility upgrades and interior improvements remain outside the basic shell unless explicitly selected and supported.
Building-specific quantities
Floor area
8,000 sq ft
Perimeter
360 ft
Conceptual roof
8,433 sq ft
Gross wall area
8,267 sq ft
An 80×100 building provides 8,000 square feet and has a 360-foot perimeter. At this scale, clear-span requirements, frame reactions, erection equipment, fire and accessibility reviews, drainage and utility capacity can be more consequential than the simple floor-area calculation.
Scope budget comparison
These three rows keep the footprint, frame, height and openings fixed so the difference between an advertised package, an erected shell and a broader project budget is visible.
| Scenario | Planning basis | Low | Typical | High |
|---|---|---|---|---|
| Kit only | Material package; erection, slab and site work excluded | $89,922 | $155,005 | $226,996 |
| Erected shell | Building package and erection; slab and site work excluded | $124,992 | $218,585 | $339,926 |
| Turnkey planning | Adds site work, four-inch slab, footings, engineering and permits | $186,890 | $334,745 | $549,226 |
Concrete slab and foundation comparison
These foundation scenarios use the same Turnkey footprint and separate the floor slab from conceptual structural footings and foundation engineering. They are planning allowances, not a foundation design.
| Foundation | Planning basis | Low | Typical | High |
|---|---|---|---|---|
| 4-inch slab | Turnkey scope with standard conceptual footings | $186,890 | $334,745 | $549,226 |
| 6-inch reinforced | Turnkey scope with the wider reinforced-slab allowance | $212,090 | $369,945 | $586,026 |
| Heavy-duty | Turnkey scope with heavy slab and footing allowances | $233,457 | $405,035 | $684,926 |
Treat 80×100 as a commercial-scale planning decision
The footprint remains inside this calculator's supported range, but the number of project interfaces grows quickly. Early planning should identify operations, structural criteria and contractor responsibilities before a supplier price is treated as a project budget.
| Decision factor | What this page represents | Alternative or next check |
|---|---|---|
| Clear span and columns | The calculator presents one red-iron planning range without designing the bay spacing or interior columns. | Ask manufacturers to price the same span, bay layout, loads and opening schedule. |
| Code and occupancy | Warehouse use is a starting configuration, not an occupancy or life-safety determination. | Confirm fire protection, exits, accessibility, energy and local review requirements before relying on turnkey allowances. |
| Foundation coordination | The comparison separates slab area, conceptual perimeter footings and engineering allowances. | Final foundations require manufacturer reactions, soil information and a local engineered design. |
Common uses
- Distribution or contractor warehouse
- Large agricultural equipment and commodity storage
- Fleet maintenance and municipal operations
- Manufacturing or fabrication shell
Hidden costs to review
Structural criteria
Wide spans, collateral loads, cranes, mezzanines, high winds and snow can change tonnage and foundation reactions beyond the baseline model.
Civil and utility work
Stormwater, fire access, paving, utility upgrades, hydrants and site lighting are not represented by the basic site-preparation allowance.
Commercial compliance
Occupancy can trigger fire protection, accessibility, energy-code and egress work that is not included in a generic metal-building package.
How to use this estimate
Confirm the frame, scope, delivery and manufacturer-plan assumptions before comparing a supplier proposal. A zero line can mean the category is outside the selected scope rather than unnecessary. The three columns use internally consistent Low, Typical and High rates with matching contingencies; they are scenarios, not promises or guaranteed limits. See the methodology for the full calculation sequence and regional limitations.
Frequently asked questions
How many square feet is an 80×100 building?
The footprint contains 8,000 square feet, within the calculator's 10,000-square-foot supported maximum.
Is the 80×100 price a contractor quote?
No. It is an early planning range based on visible assumptions. Obtain coordinated written proposals and local engineering before purchasing or signing a construction contract.
Does turnkey include every commercial requirement?
No. Turnkey Planning assembles listed allowances, but fire protection, utility upgrades, paving, specialized equipment and interior build-out remain excluded unless explicitly represented.
Compare the next relevant option
Pricing 2026-08-01-planning.2, reviewed 2026-08-01; next scheduled review 2026-11-01. Review the evidence standards, calculation sequence and exclusions.